1 files changed, 64 insertions, 24 deletions

diff --git a/src/lib/SDWHeader.cpp b/src/lib/SDWHeader.cpp
index 7f5509c..be1409b 100644
--- a/src/lib/SDWHeader.cpp
+++ b/src/lib/SDWHeader.cpp
@@ -1,50 +1,90 @@
 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
-/* libwpd
- * Version: MPL 2.0 / LGPLv2.1+
+/* Version: MPL 2.0 / LGPLv2.1+
  *
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  *
- * Major Contributor(s):
- * Copyright (C) 2002 William Lachance (wrlach@gmail.com)
- * Copyright (C) 2002-2004 Marc Maurer (uwog@uwog.net)
- *
- * For minor contributions see the git repository.
- *
  * Alternatively, the contents of this file may be used under the terms
  * of the GNU Lesser General Public License Version 2.1 or later
  * (LGPLv2.1+), in which case the provisions of the LGPLv2.1+ are
  * applicable instead of those above.
- *
- * For further information visit http://libwpd.sourceforge.net
- */
-
-/* "This product is not manufactured, approved, or supported by
- * Corel Corporation or Corel Corporation Limited."
  */
 
 #include "SDWHeader.h"
+#include "SDWEncryption.h"
+#include "SDWFileStructure.h"
 
 #include <string.h>
 
-libsdw::SDWHeader::SDWHeader(WPXInputStream * /* input */, SDWEncryption * /* encryption */, uint32_t documentOffset, uint8_t productType,
-                             uint8_t fileType, uint8_t majorVersion, uint8_t minorVersion, uint16_t documentEncryption) :
-	m_documentOffset(documentOffset),
-	m_productType(productType),
-	m_fileType(fileType),
-	m_majorVersion(majorVersion),
-	m_minorVersion(minorVersion),
-	m_documentEncryption(documentEncryption)
+libsdw::SDWHeader::SDWHeader(WPXInputStream *input, const char *password) :
+	m_needsPassword(false),
+	m_validHeader(false),
+	m_encryption(0)
 {
+	m_validHeader = loadHeader(input, password);
 }
 
 libsdw::SDWHeader::~SDWHeader()
 {
 }
 
-libsdw::SDWHeader *libsdw::SDWHeader::constructHeader(WPXInputStream * /* input */, SDWEncryption * /* encryption */)
+bool libsdw::SDWHeader::loadHeader(WPXInputStream *input, const char *password)
 {
-	return 0;
+	WPXString signature = readString(input);
+	SDW_DEBUG_MSG(("SDWHeader signature %s\n", signature.cstr()));
+	if (signature != "SW3HDR" && signature != "SW4HDR" && signature != "SW5HDR")
+		return false;
+
+	uint8_t cLen = readU8(input);
+	long oldOffset = input->tell();
+
+	uint16_t version = readU16(input);
+	uint16_t fileFlags = readU16(input);
+	if (fileFlags & SWGF_BAD_FILE) // Error on write
+		return false;
+	if (fileFlags & SWGF_HAS_PASSWD)
+		m_needsPassword = true;
+	input->seek(4, WPX_SEEK_CUR); // int32_t docFlags = readS32(input);
+	input->seek(4, WPX_SEEK_CUR); // uint32_t recSzPos = readU32(input);
+	input->seek(6, WPX_SEEK_CUR);
+	input->seek(1, WPX_SEEK_CUR); // uint8_t redlineMode = readU8(input);
+	uint8_t compatVer = readU8(input);
+	if (version >= SWG_MAJORVERSION_50 && compatVer > 0)
+		return false;
+
+	unsigned long numBytesRead(0L);
+	const uint8_t *passwd = input->read(16L, numBytesRead);
+	if (!passwd || numBytesRead != 16L)
+		return false;
+
+	input->seek(1, WPX_SEEK_CUR); // uint8_t charSet = readU8(input);
+	input->seek(1, WPX_SEEK_CUR); // uint8_t gui = readU8(input);
+
+	uint32_t date = readU32(input);
+	uint32_t time = readU32(input);
+	
+	WPXString blockName;
+	if (fileFlags & SWGF_BLOCKNAME)
+	{
+		const uint8_t *buffer = input->read(64L, numBytesRead);
+		if (numBytesRead != 64L && buffer[63] != 0)
+			return false;
+		blockName.append((const char*)buffer);
+		SDW_DEBUG_MSG(("SDWHeader blockName \"%s\"\n", blockName.cstr()));
+	}
+
+	SDW_DEBUG_MSG(("SDWHeader finished construction\n"));
+	input->seek(oldOffset + cLen, WPX_SEEK_SET);
+	
+	if (m_needsPassword && password)
+		m_encryption = new SDWEncryption(password);
+	if (m_encryption && !m_encryption->verifyPassword(passwd, date, time))
+	{
+		delete m_encryption;
+		m_encryption = 0;
+		return false;
+	}
+	return true;
 }
 /* vim:set shiftwidth=4 softtabstop=4 noexpandtab: */